EP1570967A2 - Coffrage pour une poutre en béton - Google Patents
Coffrage pour une poutre en béton Download PDFInfo
- Publication number
- EP1570967A2 EP1570967A2 EP05251255A EP05251255A EP1570967A2 EP 1570967 A2 EP1570967 A2 EP 1570967A2 EP 05251255 A EP05251255 A EP 05251255A EP 05251255 A EP05251255 A EP 05251255A EP 1570967 A2 EP1570967 A2 EP 1570967A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- corrugated
- formwork
- corrugated cardboard
- concrete
- tubular member
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D2/00—Bridges characterised by the cross-section of their bearing spanning structure
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
- E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
- E04G15/061—Non-reusable forms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B23/00—Arrangements specially adapted for the production of shaped articles with elements wholly or partly embedded in the moulding material; Production of reinforced objects
- B28B23/0068—Embedding lost cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/28—Cores; Mandrels
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/02—Forming boards or similar elements
- E04G9/021—Forming boards or similar elements the form surface being of cardboard
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G9/00—Forming or shuttering elements for general use
- E04G9/08—Forming boards or similar elements, which are collapsible, foldable, or able to be rolled up
- E04G9/083—Forming boards or similar elements, which are collapsible, foldable, or able to be rolled up which are foldable
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B7/00—Moulds; Cores; Mandrels
- B28B7/34—Moulds, cores, or mandrels of special material, e.g. destructible materials
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S249/00—Static molds
- Y10S249/02—Paper core
Definitions
- the present invention relates to a hollow formwork for use in concrete elongated member used to form a concrete roadbed of, for example, a high level roadway or a road bridge.
- the concrete beam herein referred to may be such as used as a prestressed concrete bridge beam of a kind stipulated in JIS-A-5373 as a precast prestressed concrete product.
- a concrete roadbed 100 shown in Fig. 12, of a high level roadway or a road bridge which is an example of the concrete product and is formed by a road subgrade 102 made up of a plurality of concrete beams 112 juxtaposed with each other in a direction widthwise of the roadway and laid above spaced piers 101.
- concrete mortar is cast on an upper surface of the concrete roadbed 100.
- the concrete beams 112 are in the form of an elongated hollow concrete bar having an axially extending hollow 112a, as shown in Fig. 13, for the purpose of reducing the weight and increasing the strength.
- the hollow 112a in each of the concrete beams 112 is required to have a generally heptagonal shape according to JIS-A-5373 and, accordingly, in order to define this hollow 112a in each concrete beam 112, an inner hollow formwork 113 is embedded in the respective concrete beam 112.
- the inner hollow formwork 113 As a material for the inner hollow formwork 113, a lightweight synthetic resinous foam material has hitherto been used. See, for example, the Japanese Laid-open Patent Publication No. 7-331614. It is, however, been found that where the roadbed 100 is formed with the concrete beams 112 each having embedded therein an inner hollow formwork 113 made of foamed styrene, a substantial amount of obnoxious or harmful industrial wastes would result in when the concrete roadbed is wrecked or dismounted in the future.
- hollow inner formwork 113 As a material for the hollow inner formwork 113, environmentally friendly wooden boards are employed. Also, for further reduction in weight, the use of hollow inner formworks has come to be contemplated, which is made of corrugated cardboard formed by bonding liners to opposite surfaces of a corrugated fiberboard. See, for example, the Japanese Utility Model Publication No. 60-2897.
- each hollow inner formwork 113A is, as shown in Fig. 14, placed inside an elongated outer mold 114 and, then, ready-mix concrete is poured into the elongated outer mold 114 so as to encompass the hollow inner formwork 113A.
- portions of the corrugated cardboard 120 forming the hollow inner formwork 113A tend to be collapsed as shown in Fig. 15 under the influence of a compressive force brought about by the ready-mix concrete being externally poured.
- the hollow inner formwork 113A made of corrugated cardboard which is actually used, is reinforced with a reinforcement material such as, for example, wooden board.
- a reinforcement material such as, for example, wooden board.
- the present invention is intended to provide an environmentally friendly, inexpensive hollow inner formwork made of corrugated cardboard, which is lightweight and has a sufficient strength and which can be used in an elongated concrete member such as, for example, a concrete beam used to form a concrete roadbed of, for example, a high level roadway or a road bridge.
- the hollow formwork for an elongated concrete member herein provided in accordance with the present invention is of a kind adapted to be embedded in the elongated concrete member during casting of a concrete material to define a hollow in the elongated concrete member.
- This hollow formwork of the present invention includes a tubular member having a polygonal section formed by bending an oblong plate of corrugated cardboard made of paper.
- the corrugated cardboard plate includes a plurality of corrugated cardboards laminated together and each formed by bonding liner sheets to surfaces of a corrugated sheet.
- the corrugated cardboards have flutes oriented in a direction across a thickness of the corrugated cardboard plate, and a sheet bonded to front and rear major surfaces thereof.
- the corrugated cardboard 3 made up of a corrugated sheet 1 and liner sheets 2 bonded to opposite surfaces of the corrugated sheet 1, respectively, is prominently susceptible to deformation when a compressive force is applied thereto in a direction C perpendicular to a major surface of the liner sheet 2, and susceptible to deformation when a compressive force is applied thereto in a direction B parallel to the major plane of the liner sheet 2 and perpendicular to ridges 1a of the corrugated sheet 1, but can resist to the compressive force applied in a direction B parallel to the ridges 1 or flutes in the corrugated cardboard.
- Figure 16 This is shown in Figure 16.
- the formwork according to the present invention includes the tubular member prepared from the corrugated cardboard plate formed by bonding a plurality of corrugated cardboards together and since the flutes of the corrugated cardboards are oriented in a direction across the thickness of the corrugated cardboard plate, the direction of the flutes of the corrugated cardboard having a high strength confront the direction in which the compressive force acts from the surrounding concrete, to thereby avoid an undesirable deformation of the tubular member. Hence, the formwork having a high strength can be obtained. The use of this formwork can contribute to avoid reduction in strength of the elongated concrete member as a whole. Also, since the corrugated cardboard plate is made of paper, the formwork which is lightweight, environmentally friendly and inexpensive can be obtained.
- portions of the corrugated cardboard plate, which are bent to form the tubular member may be formed with respective cutouts each having a generally V-shaped section before the corrugated cardboard plate is bent to provide the tubular member.
- the corrugated cardboard plate used as a material for the tubular member of the formwork according to the present invention has such high a strength in a direction across the thickness thereof that it cannot be easily bent. Accordingly, formation of the cutouts of the generally V-shaped section at the respective portions of the corrugated cardboard plate effectively facilitate bending of the corrugated cardboard plate and, accordingly, the formwork having a desired sectional shape can easily be obtained.
- a plurality of partition walls made of a corrugated cardboard may be utilized and positioned inside the tubular member for dividing a hollow of the tubular member into cells.
- each of the partition walls is made up of a plurality of corrugated cardboards bonded together with flutes thereof oriented in a direction parallel to a major surface of the respective partition wall, each of which corrugated cardboards is formed by bonding liner sheets to surfaces of a corrugated sheet,
- at least one of the corrugated cardboards forming the respective partition wall has the flutes oriented in a direction perpendicular to those of the other of the corrugated cardboards.
- the use of the partition walls is effective to reinforce the tubular member against the compressive force applied from the surrounding concrete material during the casting of the concrete material.
- the compressive force acts on the partition walls in a direction shown by A or B in Fig. 16, that is, in a direction parallel to the liner sheets 2, the strength of the partition walls is high.
- the compressive force acting on the partition walls through the tubular member acts in the direction A, which exhibits the highest possible strength, as far as at least one of the corrugated cardboards is concerned, and, therefore, the strength of the partition walls can further be increased.
- lamination of the plural corrugated cardboards can result in increase of the bending strength of the partition walls.
- the formwork may include a plurality of tubular members connected end-to-end with each other through a connecting wall member.
- the connecting wall member includes a base board made of paper liners and having its opposite surface to which respective undersized engagement blocks each prepared from a corrugated cardboard plate are bonded.
- the undersized engagement blocks are, when the tubular members are connected with each other, received within respective open ends of those tubular members. According to this feature, since the tubular members are connected together with the undersized engagement blocks received within the respective open ends of the neighboring tubular members, no connection between the tubular members will become bulky and a relatively high connecting strength can be obtained.
- an end wall member made of paper for closing each of opposite open ends of the tubular member or a row of tubular members may be employed.
- This end wall member includes a body made of the corrugated cardboard plate, with the flutes of the corrugated cardboards forming the corrugated cardboard plate being oriented in a direction across a thickness of the corrugated cardboard plate.
- the tubular member and the end wall member may have their respective outer surfaces treated with a waterproofing treatment, so that no water component will soak in the formwork during the casting of the concrete material and, therefore, an undesirable reduction in strength of the formwork, made of paper, resulting from absorption of the water component can advantageously be avoided.
- Fig. 1 illustrates, in a perspective view, an elongated formwork 10 made of paper material, particularly a corrugated cardboard according to the preferred embodiment of the present invention.
- the elongated formwork 10 is adapted to be embedded in an elongated concrete member such as, for example, a concrete beam that forms a part of the road subgrade discussed with reference to Fig. 12, and is in the form of a pillar of a generally heptagonal section.
- an elongated concrete member such as, for example, a concrete beam that forms a part of the road subgrade discussed with reference to Fig. 12, and is in the form of a pillar of a generally heptagonal section.
- this elongated formwork 10 includes a tubular member 11 of a generally heptagonal sectional shape formed by bending a plate of corrugated cardboard and having a hollow 11 a defined therein, a plurality of partition walls 12 disposed inside the tubular member 11 so as to divide the hollow 11a into a plurality of cells, and an end wall 13 for closing an open end of the tubular member 11, respectively.
- An outer surface of the tubular member 11 and an outer surface of the end wall 13 are subjected to a waterproofing treatment to have a coating of a waterproofing material such as, for example, paraffin.
- the tubular member 11 is formed by bending the corrugated cardboard plate 5 as shown in Fig. 3.
- the corrugated cardboard plate 5 includes a plurality of corrugated cardboards 3, each made up of a corrugated sheet 1 and liner sheets 2 bonded to one surface or opposite surfaces of the corrugated sheet 1, which are laminated together, and sheets 4 and 4 bonded by the use of a bonding agent to front and rear major surfaces of the corrugated cardboards 3, which lie perpendicular to flutes of the corrugated sheets 1.
- This corrugated cardboard plate 5 has a thickness as measured in a direction P parallel to the flutes of the corrugated sheets 1, which thickness may be, for example, about 15 mm.
- the corrugated cardboard 5 of the structure shown in and described with reference to Fig. 3 is bent to provide the tubular member 11 of the generally heptagonal sectional shape as shown in Fig. 4A.
- the generally heptagonal section of the tubular member 11 is defined by an horizontal upper side 31, left and right shoulder sides 32 continued from and inclined downwardly from respective opposite ends of the horizontal upper side 31, vertical sides 33 continued from the respective downwardly inclined shoulder sides 32 so as to lie perpendicular to the upper side 31, and left and right lower sides 34 continued from the respective vertical sides 33 so as to converge with each other at a point of merge which is defined by opposite end edges 5a of the corrugated cardboard plate 5 having been so bent.
- the tubular member 11 formed by bending the corrugated cardboard plate 5 as hereinabove described has six angled corners 11 a each defined by a substantially V-shaped cutout 5a formed in the corrugated cardboard plate 5 prior to the latter being bent to provide the tubular member 11 as best shown in Fig. 4B.
- the V-shaped cutouts 5a are formed in one of opposite surfaces of the corrugated cardboard plate 5, which defines an inner surface of the eventually formed tubular member 11, so as to extend from the relevant sheet 4 into the corrugated sheet 3, leaving the other sheet 4.
- the presence of those cutouts 5 allow the corners 11a of the tubular member 11 to be substantially free from wrinkles, having been neatly bent to a stabilized shape.
- the hollow 11 b of the tubular member 11 is divided by the partition walls 12 disposed inside the tubular member 11 and spaced a predetermined distance L from each other in a direction lengthwise of the tubular member 11.
- Each of the partition walls 12 is of a shape complemental to the cross-sectional shape of the hollow 11 b of the tubular member 11 and is bonded to the tubular member 11 by the use of an adhesive material such as, for example, glue.
- an adhesive material such as, for example, glue.
- each of the partition walls 12 is made up of a first laminate of at least two corrugated cardboards 3A, bonded together in face-to-face relation with each other with respective flutes thereof oriented in the same direction, and a second laminate of at least two corrugated cardboards 3B similarly bonded together in face-to-face relation with each other with respective flutes thereof oriented in the same direction, which second laminate is bonded together with the first laminate in face-to-face relation with each other with the flutes in the first laminate oriented in a direction perpendicular to those in the second laminate.
- Each of the corrugated cardboards 3A and 3B is made up of the corrugated sheet 1 and the liner sheet 2.
- Each of the partition walls 12 so prepared has a thickness of about 20 mm.
- the partition wall 12 has upper, shoulder, left, right, left lower and right lower sides 31A to 34A which contact the corresponding sides 31 to 34 of the tubular member 11 when the partition wall 12 is positioned inside and bonded to the tubular member 11 shown in Fig. 5.
- Fig. 5 In the example shown in Fig.
- double arrow-headed lines shown by P represent a direction of extension of the flutes of the corrugated cardboards 3A and that of the corrugated cardboards 3B, respectively, the flutes of the corrugated cardboards 3A of the first laminate are oriented in the direction P perpendicular to the horizontal upper side 31A of the partition wall 12, whereas the flutes of the corrugated cardboards 3B of the second laminate are similarly oriented in the direction P perpendicular to the vertical sides 33A of the partition wall 12.
- the partition walls 12 With the partition walls 12 positioned inside and bonded to the tubular member 11, the partition walls 12 are subjected to the compressive force F applied thereto through an outer peripheral surface of the tubular member 11 of Fig. 5 during the casting of the concrete material.
- the partition walls 12 can exhibit a high compressive strength since the applied compressive force F acts in a direction parallel to the major surfaces of the liner sheets 2, which exhibit a relatively high strength (see the directions A and B shown in Fig. 16).
- one of the first and second laminates of the corrugated cardboards 3A and 3B has the direction P of extension of the flutes, which exhibits a high compressive strength and which is exactly aligned or substantially aligned with the direction in which the applied compressive force F acts through the respective sides 31 to 34 of the tubular member 11, they can exhibit an increased strength.
- each partition wall 12 employed in the present invention is of the structure in which the first and second laminates, each made up of at least two corrugated cardboards 3A or 3B, are bonded together with the flutes in the first laminate lying in the direction different from those in the second laminate.
- each partition wall 12 is made up of at least two corrugated cardboards 3A or 3B bonded together, the partition wall 12 itself exhibits a relatively high bending strength.
- the end wall 13 used to close the respective open end of the tubular member 11 includes a generally heptagonal body 13a made up of the corrugated cardboard plate 5 with the flutes of the corrugated boards 3 oriented in a direction P across the thickness thereof in a manner similar to the tubular member 11, and an undersized engagement block 13b in the form of a laminate of two corrugated cardboards 3A and 3B and bonded to an inner surface of the heptagonal body 13a.
- the undersized engagement block 13b is of a structure in which the flutes of each of the corrugated cardboards 3A and 3B are oriented in a direction P parallel to the major surface of the respective engagement block 13b, which major surface being perpendicular to a direction across the thickness thereof, while the flutes of one of the corrugated cardboards 3A and the flutes of the other of the corrugated cardboards 3B are oriented at right angles relative to each other.
- the end wall 13 is bonded to the corresponding open end of the tubular member 11 with the undersized engagement block 13b snugly received within the hollow 11 b of the tubular member 11 to thereby close the open end of the tubular member 11 and also to reinforce the open end thereof.
- the corrugated cardboard plate 5 forming the body 13a of the end wall 13 can have a high compressive strength since the flutes in the corrugated cardboard plate 5 forming the body 13a are oriented in a direction P aligned with the direction in which the compressive force F acts on the end wall 13 during the casting of the concrete material. Also, at each of the opposite open ends of the tubular member 11, the corrugated cardboards 3A and 3B forming the undersized engagement block 13b of the end wall 13 resists against the compressive force acting on respective sides 31-34 of the tubular body 11 to thereby reinforce the tubular body 11 in a direction generally radially outwardly.
- Fig. 9 illustrates an example of use of a plurality of the tubular members 11 connected end-to-end in a direction lengthwise of the roadway.
- the elongated form 10 forms a tubular row 50 of about 7 to 8 meters in length by connecting a plurality of the tubular members 11, each being, for example, about 2 meters in length.
- connection between the neighboring tubular members 11 is accomplished by the use of a connecting wall member 14 of a structure which will now be described.
- the connecting wall member 14 includes a generally heptagonal base board 7 made up of a t least one paper liner having its opposite surfaces to which respective undersized engagement blocks 8 each prepared from the corrugated cardboard plate 5 are bonded. As shown in Fig. 10, the corrugated cardboard plate 5 for each undersized engagement block 8 has flutes oriented in a direction P across the thickness thereof. To connect the neighboring tubular members 11 together, the undersized engagement blocks 8 of the connecting wall member 14 are snugly received within the respective open ends of the neighboring tubular members 11 with an outer peripheral portion of the base board 7 sandwiched and bonded between the respective end faces of the neighboring tubular members 11 as best shown in Fig. 9.
- the connecting wall member 14 can have an increased strength. It is, however, to be noted that in place of the corrugated cardboard plate 5, the same corrugated cardboard 3A or 3B as used for each of the partition walls 12 shown in Fig. 6 may be employed as material for the engagement block.
- the tubular row 50 made up of the series-connected tubular members 11 has its opposite open ends each closed by the end wall 13 of the structure shown in and described with reference to Fig. 7.
- the formwork 10 so designed and so structured as hereinbefore described is placed inside an outer mold in a manner similar to that hitherto practiced as shown in Fig. 14, and the elongated concrete member 40, shown in Fig. 11, having the formwork 10 embedded therein is formed by casting a ready-mix concrete material into the outer mold.
- the elongated concrete member 40 may be often formed with one or more drain ports 20 in a bottom portion of the elongated concrete member 40 for drainage of water. This is because when the elongated concrete member 20 has been used in the field for a prolonged period of time, the corrugated cardboards forming the formwork 10 inside the elongated concrete member 40 may be decayed and water may soak in through cracks appearing in the concrete member 40, eventually pooling within the hollow 11 b of the elongated concrete member 20.
- a connecting passage 21 for communicating between the neighboring cells separated from each other by the partition wall 12 from each other is formed in a lower portion of the partition wall 12 used in the formwork 10, water pooling inside the hollow 11 b can be drained to the outside through the drain port 20 by way of a gap between the abutted end edges 5a of the corrugated cardboard plate 5 forming the tubular member 11, thereby accomplishing drainage of the water from the elongated concrete member 40.
- the tubular member 11, the partition walls 12, the end walls 13 and the connecting wall member 14, all forming respective parts of the formwork 10, have an excellent strength and, also, since all of them are prepared from a paper material, the formwork that is lightweight, environmentally friendly and inexpensive can be obtained.
- the partition walls 12, the end walls 13 and the connecting wall member 14 have been shown and described as prepared from corrugated cardboards, they may be made of a wood material.
- the elongated formwork 10 may have any suitable polygonal section other than the heptagonal section.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Mechanical Engineering (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Ceramic Engineering (AREA)
- Moulds, Cores, Or Mandrels (AREA)
- Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
- Bridges Or Land Bridges (AREA)
- Manufacturing Of Tubular Articles Or Embedded Moulded Articles (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004059105A JP4445781B2 (ja) | 2004-03-03 | 2004-03-03 | コンクリート長尺体の中空型枠 |
JP2004059105 | 2004-03-03 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1570967A2 true EP1570967A2 (fr) | 2005-09-07 |
EP1570967A3 EP1570967A3 (fr) | 2006-06-07 |
EP1570967B1 EP1570967B1 (fr) | 2010-05-05 |
Family
ID=34747644
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05251255A Not-in-force EP1570967B1 (fr) | 2004-03-03 | 2005-03-02 | Coffrage pour une poutre en béton et méthode de fabrication |
Country Status (10)
Country | Link |
---|---|
US (1) | US7353641B2 (fr) |
EP (1) | EP1570967B1 (fr) |
JP (1) | JP4445781B2 (fr) |
KR (1) | KR101056498B1 (fr) |
CN (1) | CN1663766B (fr) |
AT (1) | ATE466707T1 (fr) |
AU (1) | AU2005200960B2 (fr) |
DE (1) | DE602005021004D1 (fr) |
MY (1) | MY139144A (fr) |
TW (1) | TWI343309B (fr) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2009200A1 (fr) * | 2007-06-26 | 2008-12-31 | Gripp | Boîte de réservation d'un espace creux, notamment dans une dalle en béton. |
FR2918091A1 (fr) * | 2007-06-26 | 2009-01-02 | Gripp Soc Par Actions Simplifi | Boite de reservation d'un espace creux, notamment dans une dalle en beton |
CN103231447A (zh) * | 2013-04-16 | 2013-08-07 | 姚景祥 | 一种制作墙体材料内空腔的专用工具 |
FR3035131A1 (fr) * | 2015-04-16 | 2016-10-21 | Coffrabat | Procede de fabrication d'un element de coffrage et element de coffrage |
CN103231447B (zh) * | 2013-04-16 | 2016-11-30 | 姚景祥 | 一种制作墙体材料内空腔的专用工具 |
ITUB20155705A1 (it) * | 2015-11-18 | 2017-05-18 | Stefano Bazzoni | Cassaforma leggera a perdere per la realizzazione di solai e metodo per la fabricazione di detta cassaforma |
US20200224438A1 (en) * | 2019-01-11 | 2020-07-16 | Brett VERST | Concrete form apparatus |
US20210317670A1 (en) * | 2020-04-14 | 2021-10-14 | Voidform Products, Inc. | Modular Void Form Structure |
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US7871055B1 (en) * | 2006-04-24 | 2011-01-18 | University Of Maine System Board Of Trustees | Lightweight composite concrete formwork panel |
US20080168734A1 (en) * | 2006-09-20 | 2008-07-17 | Ronald Jean Degen | Load bearing wall formwork system and method |
US20080155924A1 (en) * | 2006-10-23 | 2008-07-03 | Ronald Jean Degen | Flooring System |
US8313080B2 (en) * | 2007-02-15 | 2012-11-20 | Abzac Canada Inc. | Retaining device for assembling two panels, recyclable formwork for forming a concrete structure and packaging assembly using the same |
EP2118403B1 (fr) | 2007-02-15 | 2016-07-13 | d'Anglade, Pierre-Michel | Coffrage recyclable pour former une structure en béton |
US8015771B2 (en) * | 2008-02-11 | 2011-09-13 | Leblang Dennis William | Building form for concrete floors, walls and beams |
IT1400333B1 (it) * | 2009-11-13 | 2013-05-24 | A W M Spa | Metodo e macchina per l'assemblaggio automatico di gabbie complesse formate da reti metalliche elettrosaldate. |
US20120297701A1 (en) * | 2011-05-27 | 2012-11-29 | Gerard Oakley | Folded cardboard concrete form system |
US9771728B2 (en) * | 2012-05-23 | 2017-09-26 | Dennard Charles Gilpin | Device for forming a void in a concrete foundation |
CA2916214A1 (fr) | 2012-06-19 | 2013-12-27 | Terry Hoyle | Forme a vide modulaire |
US10160188B2 (en) | 2015-03-05 | 2018-12-25 | Hisafumi Yoshii | Reinforced paper board and pallet using same |
GB201516884D0 (en) * | 2015-09-23 | 2015-11-04 | Racine Marc André | Reinforced corrugated plastic sheets and products |
CN105568861A (zh) * | 2015-12-31 | 2016-05-11 | 中铁二局集团有限公司 | 便拆式钢内模及其施工方法 |
US11267217B2 (en) * | 2016-08-23 | 2022-03-08 | Marc-Andre Racine | System and method for bending a hollow core sheet using rods |
US11389989B2 (en) * | 2019-01-14 | 2022-07-19 | E. Dillon & Company | Mold assembly for molding two concrete blocks and method of manufacturing concrete blocks |
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US3024513A (en) | 1959-02-05 | 1962-03-13 | Container Corp | Void-forming construction for pre-cast beams |
US3549116A (en) | 1967-10-20 | 1970-12-22 | Roaring Spring Blank Book Co | Core form for concrete member |
FR2198042A1 (fr) | 1972-08-18 | 1974-03-29 | Rochette Cenpa | |
JPS59229341A (ja) | 1983-06-09 | 1984-12-22 | 渡辺 義郎 | 建築用パネルの製造法 |
JP2001161458A (ja) | 1999-12-06 | 2001-06-19 | Yamada Oriya Hanbai Kk | 紙製ボード組立品 |
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- 2005-03-02 US US11/069,556 patent/US7353641B2/en not_active Expired - Fee Related
- 2005-03-02 TW TW094106348A patent/TWI343309B/zh not_active IP Right Cessation
- 2005-03-02 AT AT05251255T patent/ATE466707T1/de not_active IP Right Cessation
- 2005-03-02 EP EP05251255A patent/EP1570967B1/fr not_active Not-in-force
- 2005-03-02 DE DE602005021004T patent/DE602005021004D1/de active Active
- 2005-03-02 AU AU2005200960A patent/AU2005200960B2/en not_active Ceased
- 2005-03-03 KR KR1020050017841A patent/KR101056498B1/ko not_active IP Right Cessation
- 2005-03-03 CN CN2005100526963A patent/CN1663766B/zh not_active Expired - Fee Related
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2009200A1 (fr) * | 2007-06-26 | 2008-12-31 | Gripp | Boîte de réservation d'un espace creux, notamment dans une dalle en béton. |
FR2918091A1 (fr) * | 2007-06-26 | 2009-01-02 | Gripp Soc Par Actions Simplifi | Boite de reservation d'un espace creux, notamment dans une dalle en beton |
FR2918090A1 (fr) * | 2007-06-26 | 2009-01-02 | Gripp Soc Par Actions Simplifi | Boite de reservation d'un espace creux, notamment dans une dalle en beton |
CN103231447A (zh) * | 2013-04-16 | 2013-08-07 | 姚景祥 | 一种制作墙体材料内空腔的专用工具 |
CN103231447B (zh) * | 2013-04-16 | 2016-11-30 | 姚景祥 | 一种制作墙体材料内空腔的专用工具 |
FR3035131A1 (fr) * | 2015-04-16 | 2016-10-21 | Coffrabat | Procede de fabrication d'un element de coffrage et element de coffrage |
ITUB20155705A1 (it) * | 2015-11-18 | 2017-05-18 | Stefano Bazzoni | Cassaforma leggera a perdere per la realizzazione di solai e metodo per la fabricazione di detta cassaforma |
US20200224438A1 (en) * | 2019-01-11 | 2020-07-16 | Brett VERST | Concrete form apparatus |
US11649649B2 (en) * | 2019-01-11 | 2023-05-16 | American Forming Products Llc | Concrete form apparatus and method of using |
US20210317670A1 (en) * | 2020-04-14 | 2021-10-14 | Voidform Products, Inc. | Modular Void Form Structure |
Also Published As
Publication number | Publication date |
---|---|
AU2005200960B2 (en) | 2009-12-17 |
US20050229536A1 (en) | 2005-10-20 |
CN1663766B (zh) | 2010-10-20 |
JP4445781B2 (ja) | 2010-04-07 |
ATE466707T1 (de) | 2010-05-15 |
EP1570967A3 (fr) | 2006-06-07 |
US7353641B2 (en) | 2008-04-08 |
KR20060043385A (ko) | 2006-05-15 |
TW200533492A (en) | 2005-10-16 |
DE602005021004D1 (de) | 2010-06-17 |
AU2005200960A1 (en) | 2005-09-22 |
JP2005248517A (ja) | 2005-09-15 |
MY139144A (en) | 2009-08-28 |
CN1663766A (zh) | 2005-09-07 |
EP1570967B1 (fr) | 2010-05-05 |
TWI343309B (en) | 2011-06-11 |
KR101056498B1 (ko) | 2011-08-11 |
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